典型文献
Bright single-photon sources in the telecom band by deterministically coupling single quantum dots to a hybrid circular Bragg resonator
文献摘要:
High-performance solid-state quantum sources in the telecom band are of paramount importance for long-distance quantum communications and the quantum Internet by taking advantage of a low-loss optical fiber network.Here,we demonstrate bright telecom-wavelength single-photon sources based on In(Ga)As/GaAs quan-tum dots(QDs)deterministically coupled to hybrid circular Bragg resonators(h-CBRs)by using a wide-field fluorescence imaging technique.The QD emissions are redshifted toward the telecom O-band by using an ultra-low InAs growth rate and an InGaAs strain reducing layer.Single-photon emissions under both continuous wave(CW)and pulsed operations are demonstrated,showing high brightness with count rates of 1.14 MHz and 0.34 MHz under saturation powers and single-photon purities of g(2)(0)=0.11±0.02(CW)and g(2)(0)=0.087±0.003(pulsed)at low excitation powers.A Purcell factor of 4.2 with a collection efficiency of 11.2%±1%at the first lens is extracted,suggesting efficient coupling between the QD and h-CBR.Our work contributes to the development of highly efficient single-photon sources in the telecom band for fiber-based quantum communication and future distributed quantum networks.
文献关键词:
中图分类号:
作者姓名:
SHI-WEN XU;YU-MING WEI;RONG-BIN SU;XUE-SHI LI;PEI-NIAN HUANG;SHUN-FA LIU;XIAO-YING HUANG;YING YU;JIN LIU;XUE-HUA WANG
作者机构:
State Key Laboratory of Optoelectronic Materials and Technologies,School of Physics,School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou 510275,China
文献出处:
引用格式:
[1]SHI-WEN XU;YU-MING WEI;RONG-BIN SU;XUE-SHI LI;PEI-NIAN HUANG;SHUN-FA LIU;XIAO-YING HUANG;YING YU;JIN LIU;XUE-HUA WANG-.Bright single-photon sources in the telecom band by deterministically coupling single quantum dots to a hybrid circular Bragg resonator)[J].光子学研究(英文),2022(08):B1-B6
A类:
CBRs,purities
B类:
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AB值:
0.484776
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